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Battery Dies


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PeterCanfield
New User

Dec 9, 2010, 8:05 AM

Post #1 of 3 (1447 views)
Battery Dies Sign In

I have a 2005 Ford Focus ST with 100,000 miles, the problem i am having is My battery died which caused my car to die. My alternator is putting out 14.5 volts i put a new battery in it let it sit over nite. the car started fine i turned the heater lights and everything I needed to drive after 40 minutes of driving everything starts shutting down with out warning can someone help? the alternator still show charging.......


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Dec 9, 2010, 8:23 AM

Post #2 of 3 (1440 views)
Re: Battery Dies Sign In

Hmmm? Check that voltage again with lights on, blower for heat on, RWD and with a slight rev of engine should still stay above about 13.5 or so. If not the alternator may not be putting out the required amps for assorted reasons. Do that load test and see what it shows.

Also - don't let a very low battery new or not be exposed to very cold weather. Charge it up with a charger as needed,

T



ganjarome
Novice

Feb 8, 2011, 3:29 AM

Post #3 of 3 (1364 views)
Re: Battery Dies Sign In

Don't do your tests with a low battery. Charge it first. Also take voltage reading while cranking. Should stay above 12 volts. A well charged static battery(engine and key off) should have 12.5 to 13 volts and 13.5 or more when vehicle running.






 
 
 






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